Inorganic Chemistry PYQ — Page 14

Number of molecules having bond order 2 from the following molecules is ________ \(\mathrm{C}_2, \mathrm{O}_2, \mathrm{Be}_2, \mathrm{Li}_2, \mathrm{Ne}_2, \mathrm{~N}_2, \mathrm{He}_2\)

The total number of anti bonding molecular orbitals, formed from $2s$ and $2p$ atomic orbitals in a diatomic molecule is _____________.

The metal atom present in the complex MABXL (where A, B, X and L are unidentate ligands and \(\mathrm{M}\) is metal) involves \(\mathrm{sp}^3\) hybridization. The number of geometrical isomers exhibited by the complex is:

In case of isoelectronic species the size of ${F}^{–},\mathrm{Ne}$ and ${\mathrm{Na}}^{+}$ is affected by:

Element not showing variable oxidation state is :

The transition metal having highest ${3}^{\mathrm{rd}}$ ionisation enthalpy is:

Match List I with List II \(\begin{array}{llll} \text{List - I} & \text{List - II} \\ \text{(A) } \mathrm{ICl} & \text{(I) T - shape} \\ \text{(B) } \mathrm{ICl}_3 & \text{(II) pyramidal} \\ \text{(C) } \mathrm{ClF}_5 & \text{(III) Pentagonal bipyramidal} \\ \text{(D) } \mathrm{IF}_7 & \text{(IV) Linear} \\ \end{array}\) Choose the correct answer from the options given below :

The element having the highest first ionization enthalpy is

The correct order of first ionization enthalpy values of the following elements is : (A) \(\mathrm{O}\) (B) \(\mathrm{N}\) (C) \(\mathrm{Be}\) (D) \(\mathrm{F}\) (E) \(\mathrm{B}\) Choose the correct answer from the options given below :

If an iron (III) complex with the formula \(\left[\mathrm{Fe}\left(\mathrm{NH}_3\right)_x(\mathrm{CN})_y\right]^{-}\)has no electron in its \(e_g\) orbital, then the value of \(x+y\) is

The correct sequence of electron gain enthalpy of the elements listed below is A. Ar B. Br C. F D. S Choose the most appropriate from the options given below:

If IUPAC name of an element is "Unununnium" then the element belongs to nth group of periodic table. The value of $n$ is _______.

In which one of the following pairs the central atoms exhibit \(\mathrm{sp}^2\) hybridization ?

Match List I with List II \(\begin{array}{|l|l|l|l|} \hline & \text{List - I} & & \text{List - II} \\ & \text{(Molecule/Species)} & & \text{(Property/Shape)} \\ \hline \text { A. } & \mathrm{SO}_2 \mathrm{Cl}_2 & \text { I. } & \text { Paramagnetic } \\ \hline \text { B. } & \mathrm{NO} & \text { II. } & \text { Diamagnetic } \\ \hline \text { C. } & \mathrm{NO}_2^{-} & \text {III. } & \text { Tetrahedral } \\ \hline \text { D. } & \mathrm{I}_3^{-} & \text {IV. } & \text { Linear } \\ \hline \end{array}\) Choose the correct answer from the options given below:

The correct statement/s about Hydrogen bonding is/are A. Hydrogen bonding exists when \(\mathrm{H}\) is covalently bonded to the highly electro negative atom. B. Intermolecular \(\mathrm{H}\) bonding is present in o-nitro phenol C. Intramolecular \(\mathrm{H}\) bonding is present in HF. D. The magnitude of \(\mathrm{H}\) bonding depends on the physical state of the compound. E. H-bonding has powerful effect on the structure and properties of compounds Choose the correct answer from the options given below:

Given below are two statements : Statement I : The correct order of first ionization enthalpy values of \(\mathrm{Li}, \mathrm{Na}, \mathrm{F}\) and \(\mathrm{Cl}\) is \(\mathrm{Na} < \mathrm{Li} < \mathrm{Cl} < \mathrm{F}\). Statement II : The correct order of negative electron gain enthalpy values of \(\mathrm{Li}\), \(\mathrm{Na}, \mathrm{F}\) and \(\mathrm{Cl}\) is \(\mathrm{Na} < \mathrm{Li} < \mathrm{F} < \mathrm{Cl}\) In the light of the above statements, choose the correct answer from the options given below :

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R. Assertion A : ${H}_{2}\mathrm{Te}$ is more acidic than ${H}_{2}S$. Reason R: Bond dissociation enthalpy of ${H}_{2}\mathrm{Te}$ is lower than ${H}_{2}S$. In the light of the above statements. Choose the most appropriate from the options given below.

The number of non-polar molecules from the following is $\mathrm{HF},{H}_{2}O,{\mathrm{SO}}_{2},{H}_{2},{\mathrm{CO}}_{2},{\mathrm{CH}}_{4},{\mathrm{NH}}_{3},\mathrm{HCl},{\mathrm{CHCl}}_{3},{\mathrm{BF}}_{3}$

Choose the correct option having all the elements with ${d}^{10}$ electronic configuration from the following:

The total number of species from the following in which one unpaired electron is present, is _______ \(\mathrm{N}_2, \mathrm{O}_2, \mathrm{C}_2^{-}, \mathrm{O}_2^{-}, \mathrm{O}_2^{2-}, \mathrm{H}_2^{+}, \mathrm{CN}^{-}, \mathrm{He}_2^{+}\)

The correct IUPAC name of \(\left[\mathrm{PtBr}_2\left(\mathrm{PMe}_3\right)_2\right]\) is :

$\mathrm{NaCl}$ reacts with conc. ${H}_{2}{\mathrm{SO}}_{4}$ and ${K}_{2}{\mathrm{Cr}}_{2}{O}_{7}$ to give reddish fumes (B), which react with $\mathrm{NaOH}$ to give yellow solution (C). (B) and (C) respectively are ;

The Spin only magnetic moment value of square planar complex $[\mathrm{Pt}{({\mathrm{NH}}_{3})}_{2}\mathrm{Cl}({\mathrm{NH}}_{2}{\mathrm{CH}}_{3})]\mathrm{Cl}$ is _______ B.M. (Nearest integer) ( Given atomic number for $\mathrm{Pt}=78)$

The spin-only magnetic moment value of the ion among \(\mathrm{Ti}^{2+}, \mathrm{V}^{2+}, \mathrm{Co}^{3+}\) and \(\mathrm{Cr}^{2+}\), that acts as strong oxidising agent in aqueous solution is _______ BM (Near integer). (Given atomic numbers : \(\mathrm{Ti}: 22, \mathrm{~V}: 23, \mathrm{Cr}: 24, \mathrm{Co}: 27\))